{"id":"F2006B10785","name":"AD/IAI-W/10 - Emergency Lighting System","slug":"ad-iai-w-10-emergency-lighting-system","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":56248,"registerId":"commonwealth-F2006B10785-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/IAI-W/10 - Emergency Lighting System","content":"---\nmeta-content-style-type: text/css\nmeta-content-type: application/xhtml+xml; charset=utf-8\nmeta-generator: Aspose.Words for .NET 22.10.0\n---\n\n?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"no\"?>\n\nCOMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n \n\n![](image.001.png)  Israel Aircraft Industries 1123 and 1124 (Westwind) Series Aeroplanes\n\n \n\nAD/IAI-W/10 Emergency Lighting System 8/85\n\nApplicability: As detailed in Requirement Document.\n\n \n\nRequirement: Inspect and Modify the emergency lighting system components according to Accomplishment Instructions Parts 1 and 2 contained in IAI Westwind S.B. 1124-33-010.\n\n \n\nCompliance: Within 150 hours time in service after 31 August 1985. Background: The aircraft manufacturer advises that:\n\na)        the inertial switch may not be aligned with the longitudinal axis of the aircraft; and\n\n \n\nb)        the possibility exists for an inadvertent battery pack short circuit to surrounding structure.\n","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, time-bound airworthiness directive from 1985 addressing specific technical defects in a particular aircraft type. It has not expanded beyond its original narrow safety purpose."},"complexity_factors":["Single, specific technical requirement referencing an external manufacturer document","No defined terms section","Simple applicability clause ('As detailed in Requirement Document')","Straightforward compliance deadline (150 hours time in service)","Minimal conditional logic—essentially one mandatory action with no exceptions or nested provisions","Short length (approximately 150 words)"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** issued by Australia's Civil Aviation Safety Authority (CASA) for specific Israel Aircraft Industries (IAI) Westwind aircraft models (the 1123 and 1124 series).\n\n**What it does:**\n- Requires owners and operators of these aircraft to **inspect and modify the emergency lighting system**\n- The work must follow specific instructions in a manufacturer bulletin called **IAI Westwind S.B. 1124-33-010**\n\n**Why it matters:**\nThe manufacturer identified two safety problems:\n- The **inertial switch** (a device that triggers emergency systems during sudden deceleration, like a crash) might be installed crooked—not aligned with the aircraft's front-to-back axis\n- The **battery pack** for emergency lights could short-circuit against the aircraft's frame, causing a fire or system failure\n\n**Who must comply:**\nOperators of IAI Westwind 1123 and 1124 series aircraft\n\n**Deadline:**\nWithin 150 flight hours after 31 August 1985\n\n**Bottom line:** This is a mandatory safety fix to ensure emergency lighting works properly during an accident."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The instrument's scope is as stated within the document: it applies to the IAI Westwind 1123 and 1124 series as identified in the Applicability/Requirement Document and requires actions described in IAI S.B. 1124-33-010 Parts 1 and 2, to be completed within 150 hours TIS after 31 August 1985. The text contains no indication that the scope has been amended from an earlier or different intent; it defines applicability, required action, compliance deadline, and the manufacturer's stated technical reasons (inertial switch misalignment; potential battery pack short)."},"complexity_factors":["Reference to external documents: applicability links to a Requirement Document and the work must follow IAI Service Bulletin 1124-33-010 Parts 1 & 2 (Requirement; Applicability).","Technical tasks: inspection and physical modification (inertial switch alignment and battery pack installation) require qualified maintenance skills and possible parts (Requirement; Background).","Fixed regulatory deadline: 150 hours time in service after a specified date creates scheduling pressure (Compliance).","Enforcement context: issued under the Commonwealth civil aviation AD regime (PART 39 header), so operators must demonstrate compliance to the regulator (Header; Requirement).","Operational impact uncertainty: the directive does not provide an estimated labour/time requirement or parts list in the text, leaving owners to source details from the referenced service bulletin (Requirement)."],"plain_english_summary":"This directive requires owners/operators of IAI Westwind 1123/1124 aeroplanes to inspect and modify emergency lighting components per IAI Service Bulletin 1124‑33‑010 (Parts 1 & 2). It addresses an inertial switch misalignment and potential battery‑pack shorting. Compliance is mandatory within 150 hours' time in service after 31 August 1985, with operators bearing the costs and scheduling/maintenance burden."}},"importantCases":[],"_links":{"self":"/api/acts/ad-iai-w-10-emergency-lighting-system","history":"/api/acts/ad-iai-w-10-emergency-lighting-system/history","analysis":"/api/acts/ad-iai-w-10-emergency-lighting-system/analysis","conflicts":"/api/acts/ad-iai-w-10-emergency-lighting-system/conflicts","importantCases":"/api/acts/ad-iai-w-10-emergency-lighting-system/important-cases","documents":"/api/acts/ad-iai-w-10-emergency-lighting-system/documents"}}